# YourAITools ToolPick Market Index > YourAITools ToolPick Market Index is a paid API for AI agents from api.youraitools.co, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-24). Returns a ranked, filterable directory of AI tools, APIs, and agents payable via x402 (crypto micropayments), searchable by capability need and blockchain network. ## Facts - Endpoint: GET https://api.youraitools.co/toolpick/v1/market?utm_source=zero.xyz - Price: $0.02/call - Payment: x402 - Status: unknown - Last checked: 2026-10-24 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/youraitools-toolpick-market-index-603e1a34 - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_S2Fud4KaOQuWccjKSi3Tj Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. ## How to call it through Zero Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`): ```sh zero fetch --capability youraitools-toolpick-market-index-603e1a34 ``` Example prompt: Search the YourAITools market index for APIs that can do 'Solana token safety checks', limited to 10 results on any network, so I can find a crypto-payable tool for that capability. ## When to prefer this Use this endpoint when an AI agent needs to discover x402-compatible (crypto-payable) APIs or tools for a specific task, especially when the agent wants to compare sellers by price, payer activity, or network (Base, Solana, etc.). Prefer this over generic API marketplaces when USDC/crypto micropayment compatibility is a hard requirement, or when the agent needs live market statistics like 30-day call volumes, payer counts, and price distributions across the x402 ecosystem. ## Known failure modes - Invalid 'need' string length (must be 2-200 chars) returns validation error - Invalid 'network' enum value returns 400 - Stale index (age_s high, stale:true) may return outdated listings - sources_failed array populated when one or more index sources are unreachable - No results returned when 'need' query matches no indexed tools - Limit out of range (must be 1-25) returns validation error ## How this service works x402 API market data report. Market report for sellers and builders: for a category (need, e.g. token safety) or the whole x402 index, resource and seller-host counts, hosts with 3+ payers, listed price quartiles, the price where buyers are (payer-weighted median), 30-day calls, estimated 30-day revenue (calls x price, an upper bound), top sellers and the resources with most payers. Use it to price a new endpoint or test a niche for paying demand. limit 1-25 (default 10). ## Output Returns a JSON object containing: ranked top resources by payer count (with price, call volume, relevance score, description, supported networks), aggregated seller stats (total hosts, price distribution, estimated 30-day revenue), index freshness metadata, search terms parsed, active filters, a confidence rating, and a disclaimer. Each resource entry includes host, service name, method, price in USD, 30-day calls and payers, repeat-buyer flag, and last-called timestamp. ## Request schema (JSON Schema) ```json { "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "input" ], "properties": { "input": { "type": "object", "required": [ "type", "method" ], "properties": { "type": { "type": "string", "const": "http" }, "method": { "enum": [ "GET" ], "type": "string" }, "queryParams": { "type": "object", "required": [], "properties": { "need": { "type": "string", "description": "The capability you need, in plain words, e.g. \"solana token safety\", \"web search\", \"pdf to text\", \"hyperliquid funding rates\" (2-200 chars); omit for the whole index" }, "limit": { "type": "integer", "description": "Rows per list, 1-25 (default 10)" }, "network": { "enum": [ "any", "base", "solana", "polygon", "arbitrum", "optimism", "ethereum", "avalanche" ], "type": "string", "description": "Only resources payable on this network (default any)" } }, "description": "Search intents: x402 market data, api pricing research, api market size, x402 seller analytics, api price benchmarks, paid api competition" } }, "additionalProperties": false }, "output": { "type": "object", "required": [ "type" ], "properties": { "type": { "type": "string" }, "example": { "type": "object", "properties": { "need": { "type": "string" }, "tier": { "type": "string" }, "index": { "type": "object" }, "stats": { "type": "object" }, "terms": { "type": "array" }, "filters": { "type": "object" }, "checked_at": { "type": "string" }, "confidence": { "type": "string" }, "disclaimer": { "type": "string" }, "top_sellers": { "type": "array" }, "total_sellers": { "type": "number" }, "sources_failed": { "type": "array" }, "top_resources_by_payers": { "type": "array" } } } } } } } ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "need": "token safety", "tier": "market", "index": { "age_s": 600, "stale": false, "refreshed_at": "2026-10-23T12:59:10.247Z" }, "stats": { "hosts": 87, "calls_30d": 2646, "price_usd": { "max": 1, "min": 0.001, "p25": 0.01, "p75": 0.02, "median": 0.01 }, "resources": 287, "est_revenue_note": "calls x listed price; an upper bound (includes sellers testing their own endpoints and crawler payments; resources priced $5+ excluded)", "priced_resources": 287, "est_revenue_30d_usd": 52.57, "price_with_buyers_usd": { "p25": 0.005, "p75": 0.015, "median": 0.01, "payer_weighted_median": 0.01 }, "hosts_with_3plus_payers": 34 }, "terms": [ "token", "safety" ], "filters": { "network": "any" }, "checked_at": "2026-10-23T13:09:10.247Z", "confidence": "high", "disclaimer": "Rankings use public x402 index metadata and the index-reported 30-day call and payer counts; listings are self-described by sellers and are not endorsements. A live check only shows that an endpoint answers with x402 payment terms right now, not that its data is good or that the seller is safe. Check terms before paying. ToolPick never pays, holds funds or keys.", "top_sellers": [ { "host": "api.losbeto.xyz", "service": "Losbeto Market Intelligence", "calls_30d": 69, "resources": 1, "payers_30d_max": 1, "price_range_usd": [ 0.2, 0.2 ], "est_revenue_30d_usd": 13.8 }, { "host": "oracle.cyberwarex.com", "service": "DeFi Safety Oracle", "calls_30d": 279, "resources": 19, "payers_30d_max": 5, "price_range_usd": [ 0.001, 1 ], "est_revenue_30d_usd": 9.81 } ], "total_sellers": 87, "sources_failed": [], "top_resources_by_payers": [ { "host": "api.x402node.dev", "rank": 1, "score": 1.727, "method": "GET", "service": "api.x402node.dev", "networks": [ "base", "solana" ], "resource": "https://api.x402node.dev/chain/token-tax", "calls_30d": 99, "price_usd": 0.006, "relevance": 0.44, "indexed_on": [ "cdp" ], "payers_30d": 20, "description": "Inspect an ERC20 token contract for buy/sell tax fields, owner renouncement and basic hone", "repeat_buyers": true, "last_called_at": "2026-10-23T06:30:19.000Z" } ] } } ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/youraitools-toolpick-market-index-603e1a34/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from api.youraitools.co](https://www.zero.xyz/host/api.youraitools.co/llms.txt)